I have a son who is 15. He will be 16 in October. He is a pretty good kid. He is not perfect, but once you correct him on something, you don't have to ask again. He does what is asked the first time. I know this because not only am I with him at home, I am also with him at school because he goes to the small high school where I teach. I see him interacting with other adults/teachers in addition to myself.